Journal article
First plasma wave observations at Neptune
Science (American Association for the Advancement of Science), Vol.246(4936), pp.1494-1498
12/15/1989
DOI: 10.1126/science.246.4936.1494
PMID: 17756006
Abstract
The Voyager 2 plasma wave instrument detected many familiar plasma waves during the encounter with Neptune, including electron plasma oscillations in the solar wind upstream of the bow shock, electrostatic turbulence at the bow shock, and chorus, hiss, electron cyclotron waves, and upper hybrid resonance waves in the inner magnetosphere. Low-frequency radio emissions, believed to be generated by mode conversion from the upper hybrid resonance emissions, were also observed propagating outward in a disklike beam along the magnetic equatorial plane. At the two ring plane crossings many small micrometer-sized dust particles were detected striking the spacecraft. The maximum impact rates were about 280 impacts per second at the inbound ring plane crossing, and about 110 impacts per second at the outbound ring plane crossing. Most of the particles are concentrated in a dense disk, about 1000 kilometers thick, centered on the equatorial plane. However, a broader more tenuous distribution also extends many tends of thousands of kilometers from the equatorial plane, including over the northern polar region.
Details
- Title: Subtitle
- First plasma wave observations at Neptune
- Creators
- D. A. Gurnett - University of IowaW. S. Kurth - University of IowaL. J. Granroth - University of IowaI. H. Cairns - University of IowaR. L. Poynter - Jet Propulsion Laboratory
- Resource Type
- Journal article
- Publication Details
- Science (American Association for the Advancement of Science), Vol.246(4936), pp.1494-1498
- DOI
- 10.1126/science.246.4936.1494
- PMID
- 17756006
- ISSN
- 0036-8075
- eISSN
- 1095-9203
- Language
- English
- Date published
- 12/15/1989
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984455262502771
Metrics
6 Record Views